It will be important to show our mettle and see the Nikkei reach the 13,000 mark by the end of the fiscal year (March 31)… We want to continue taking (new) steps to help stock prices rise.

Before and after… the Nikkei jumped 200 points after Amrai's comments.

The Nikkei at 13,000 would require 17 per cent growth in the next two months, which is ambitious. But now that we've had a change to see how the market reacts to such the move, it's looking very possible indeed.

The government announcing it has a stock market target is largely a self-fulfilling prophecy: stock markets tend to price in future gains, and a government announcing that a certain level is now a matter of policy is as near certain as gains can get. Even if it undershoots, it's still clear that the statement has helped Japanese companies. The biggest direct concern is that such a statement might lead to a dangerous asset bubble, but a Nikkei of 13,000 would, if anything, remain underpriced. So long as the government doesn't get carried away with its success, the move seems to be a smart one.